How can linear equation help us in real life or practically?

Answer 1

Linear equations have countless practical uses. People use them everyday and probably give no thought to it. Every time you add, subtract, multiply or divide two numbers, or combine those operations, you are applying a linear equation of some form or another.

A few trivial examples are given below.

Using linear equations, you can compute such things as:
1 ... temperature scale interconversions
2 ... metric unit interconversions
3 ... distance travelled in a given time at a given speed
4 ... time it takes to travel a given distance at a given speed
5 ... cost of n items based on the cost of 1 item
6 ... the amount of tax to be paid on a purchase
7 ... what percentage one value is of another

etc ...

E=mc² is a linear equation, since c is a constant.

The applications of linear equations are virtually limitless.
They are among the most useful type of practical equations in everyday use.

After linear equations, the next most common type of useful equation is the quadratic equation, which can be used to solve some higher scientific problems, such as in finding the lengths of arcs, curves, distances, areas and even relativity problems.
 

Answer 2

Linear Equation In Real Life

Answer 3

It models variables with linear relationships. For instance, for every hour that you work, you get paid an hourly wage (for salaried employees its on a monthly basis). This is a linear relationship. If one month equals $4,000 then four months is four times that amount or $16,000, and one year (twelve months) is twelve times that or $48,000. So that's a pretty good practical, real life example of a linear relationship, but most practical, common tasks are also linear, such as doubling or tripling recipes to serve double or triple the number of guests, etc.

Answer 4

everytime two magnitudes have a linear relationship we use a linear equation to model them.
i.e:
- when an object is moving at constant speed, we can find the distance by the eq: d = v*t
- the quantity of needed heat to raise the temperature of an object: Q = m*c*T
- etc....

Answer 5

Which linear equation are you referring to?

Answer 6

Aircraft acceleration rate going down a runway !

(i think )